She may lay a few clutches. And as far as her being the only one, they can hold sperm for quite some time. Are u planning on hatching any? If so mske sure your prepared to house them. You can get quite a few, and thry grow quickly. BUt are the cutest lil guys. I have quite a few right now. 9 total. And my blue female should be laying eggs soon. She and my blue male have been pretty busy lately

How high is your waterline to the top of your tank? Is there room for her to go on walkabout and lay her eggs? It looks like you do have a golden apple snail, or mystery snail, and they need room above the waterline to lay their eggs. Those certainly do look like eggs, but they won't be viable. You can go ahead and vaccuum them out.

From what I can see, she def looks like an ivory apple snail. And those do look like eggs. However, she should be laying them above water. I'm not sure how to coax her to do so, I have never had this problem. Sadly, the eggs underwater will drown , and the eggs are no good. U might want to try another forum just for ue apple, to see if anyone there can help u get her to layt above the waterline. There are some great knowledgeable, and friendly people at applesnail.net , hope they can help u out??